29985980 has 24 divisors (see below), whose sum is σ = 63095760. Its totient is φ = 11970560.

The previous prime is 29985973. The next prime is 29986003. The reversal of 29985980 is 8958992.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11651 + ... + 13989.

It is an arithmetic number, because the mean of its divisors is an integer number (2628990).

Almost surely, 2^29985980 is an apocalyptic number.

29985980 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

29985980 is an abundant number, since it is smaller than the sum of its proper divisors (33109780).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

29985980 is a wasteful number, since it uses less digits than its factorization.

29985980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2989 (or 2987 counting only the distinct ones).

The product of its (nonzero) digits is 466560, while the sum is 50.

The square root of 29985980 is about 5475.9455804454. The cubic root of 29985980 is about 310.6748392757.

The spelling of 29985980 in words is "twenty-nine million, nine hundred eighty-five thousand, nine hundred eighty".